unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs,ComObj, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  AExcel:Variant;
  ASheet:Variant;
  
begin
  AExcel:=CreateOleObject('Excel.Application');
  AExcel.Visible:=False;
  AExcel.WorkBooks.Add;
  AExcel.WorkSheets[1].Cells[3,1].NumberFormatLocal:='@';
  AExcel.worksheets[1].cells[3,1]:='123456789123456789';

  AExcel.worksheets[1].SaveAs('HelloWord.xls');

  AExcel.Quit;
  AExcel:=Unassigned;
  //ShowMessage(ExcelApp.Cells[3,1].Value);
end;

end.
